AIRA/src/ui_interface.rs

use std::net::TcpStream;
use tungstenite::{Error, WebSocket};
use crate::{protocol};

mod ui_messages {
    use std::str::from_utf8;
    use tungstenite::Message;
    use uuid::Uuid;
    use crate::{print_error, session_manager::protocol, utils::to_uuid_bytes};

    pub fn on_connected(index: usize) -> Message {
        Message::from(format!("connected {}", index))
    }
    pub fn on_disconnected(index: usize) -> Message {
        Message::from(format!("disconnected {}", index))
    }
    pub fn on_new_session(index: usize) -> Message {
        Message::from(format!("new_session {}", index))
    }
    pub fn on_new_message(index: &usize, raw_message: &[u8]) -> Option<Message> {
        match from_utf8(raw_message) {
            Ok(msg) => Some(Message::from(format!("new_message {} {}", index, msg))),
            Err(e) => {
                print_error(e);
                None
            }
        }
    }
    pub fn on_file_received(index: &usize, buffer: &[u8]) -> Option<Message> {
        let uuid = Uuid::from_bytes(to_uuid_bytes(&buffer[..16])?);
        match from_utf8(&buffer[16..]) {
            Ok(file_name) => Some(Message::from(format!("file {} {} {}", index, uuid.to_string(), file_name))),
            Err(e) => {
                print_error(e);
                None
            }
        }
    }
    pub fn load_sent_msg(index: &usize, buffer: &[u8]) -> Option<Message> {
        match buffer[0] {
            protocol::Headers::MESSAGE => {
                match from_utf8(&buffer[1..]) {
                    Ok(msg) => Some(Message::from(format!("load_sent_msg {} {}", index, msg))),
                    Err(e) => {
                        print_error(e);
                        None
                    }
                }
            }
            protocol::Headers::FILE => {
                let uuid = Uuid::from_bytes(to_uuid_bytes(&buffer[1..17])?);
                match from_utf8(&buffer[17..]) {
                    Ok(file_name) => Some(Message::from(format!("load_sent_file {} {} {}", index, uuid.to_string(), file_name))),
                    Err(e) => {
                        print_error(e);
                        None
                    }
                }
            }
            _ => None
        }
    }
    pub fn on_name_told(index: &usize, raw_name: &[u8]) -> Option<Message> {
        match from_utf8(raw_name) {
            Ok(name) => Some(Message::from(format!("name_told {} {}", index, name))),
            Err(e) => {
                print_error(e);
                None
            }
        }
    }
    pub fn set_as_contact(index: usize, name: &str, verified: bool) -> Message {
        Message::from(format!("is_contact {} {} {}", index, verified, name))
    }
    pub fn fingerprints(local: &str, peer: &str) -> Message {
        Message::from(format!("fingerprints {} {}", local, peer))
    }
    pub fn file_sent(index: usize, file_name: &str, uuid: Option<String>) -> Message {
        Message::from(format!("file_sent {} {} {}", index, match uuid {
            Some(uuid) => uuid,
            None => "None".to_owned()
        }, file_name))
    }
}

pub struct UiConnection{
    pub websocket: WebSocket<TcpStream>,
    pub is_valid: bool
}

impl UiConnection {
    pub fn new(websocket: WebSocket<TcpStream>) -> UiConnection {
        UiConnection {
            websocket: websocket,
            is_valid: true
        }
    }

    pub fn on_received(&mut self, index: &usize, buffer: &[u8]) {
        let ui_message = match buffer[0] {
            protocol::Headers::MESSAGE => {
                ui_messages::on_new_message(index, &buffer[1..])
            }
            protocol::Headers::TELL_NAME => {
                ui_messages::on_name_told(index, &buffer[1..])
            }
            protocol::Headers::FILE => {
                ui_messages::on_file_received(index, &buffer[1..])
            }
            _ => None
        };
        if ui_message.is_some() {
            self.websocket.write_message(ui_message.unwrap()).unwrap();
        }
    }
    pub fn on_new_session(&mut self, index: usize) {
        self.websocket.write_message(ui_messages::on_new_session(index)).unwrap();
    }
    pub fn on_disconnected(&mut self, index: usize) {
        self.websocket.write_message(ui_messages::on_disconnected(index)).unwrap();
    }
    pub fn on_connected(&mut self, index: usize) {
        self.websocket.write_message(ui_messages::on_connected(index)).unwrap();
    }

    pub fn read_message(&mut self) -> Result<String, Error> {
        Ok(self.websocket.read_message()?.into_text()?)
    }
    pub fn read_binary(&mut self) -> Result<Vec<u8>, Error> {
        Ok(self.websocket.read_message()?.into_data())
    }
    pub fn set_as_contact(&mut self, index: usize, name: &str, verified: bool) {
        self.websocket.write_message(ui_messages::set_as_contact(index, name, verified)).unwrap();
    }
    pub fn load_msgs(&mut self, index: &usize, msgs: Vec<(bool, Vec<u8>)>) {
        msgs.into_iter().for_each(|msg| {
            if msg.0 { //outgoing
                match ui_messages::load_sent_msg(index, &msg.1) {
                    Some(msg) => self.websocket.write_message(msg).unwrap(),
                    None => {}
                }
            } else {
                self.on_received(index, &msg.1)
            }
        })
    }
    pub fn fingerprints(&mut self, local: &str, peer: &str) {
        self.websocket.write_message(ui_messages::fingerprints(local, peer)).unwrap();
    }
    pub fn file_sent(&mut self, index: usize, name: &str, uuid: Option<String>) {
        self.websocket.write_message(ui_messages::file_sent(index, name, uuid)).unwrap()
    }
}